We look at the division of 788647 by 90 
We want to figure out the number of times 788647 can be divided by 90.

Let's proceed to step 1:
When dividing 7 by 90, we get 0 with a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Include the next digit (8) from the dividend after 7, then repeat: 78 / 90

Let's proceed to step 2:
90 goes into 78 0 times with a remainder of 78.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 78, we end up with 78.
Bring next digit (8) of the dividend behind the 78 and repeat the process: 788 / 90

Advancing to step 3:
If we divide 788 by 90, we get 8 and a remainder of 68.
Write down 8 as next digit of the result. 
Result so far: 8.0
The remainder is 68 after subtracting 720 from 788.
Fetch the next digit (6) from the dividend, attach it to 68 and continue: 686 / 90

Let's proceed to step 4:
90 can be fit into 686 7 times, resulting in a remainder of 56.
Record the quotient 7 as the next digit in the result. 
Result so far: 87.0
Subtract 630 from 686 to get 56.
Bring next digit (4) of the dividend behind the 56 and repeat the process: 564 / 90

On to step 5:
The number 90 fits into 564 6 times, leaving a remainder of 24.
Record the quotient 6 as the next digit in the result. 
Result so far: 876.0
If we subtract 540 from 564, we get 24.
Include the next digit (7) from the dividend after 24, then repeat: 247 / 90

On to step 6:
90 goes into 247 2 times with a remainder of 67.
The number 2 becomes the next digit in our result. 
Result so far: 8762.0
Subtract 180 from 247 to get 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Going ahead to step 7:
The number 90 fits into 670 7 times, leaving a remainder of 40.
Put 7 as the next digit of the answer. 
Result so far: 8762.7
The remainder is 40 after subtracting 630 from 670.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 8:
The number 90 fits into 400 4 times, leaving a remainder of 40.
Record the quotient 4 as the next digit in the result. 
Result so far: 8762.74
Subtracting 360 from 400 leaves us with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Let's proceed to step 9:
90 can be fit into 400 4 times, resulting in a remainder of 40.
The number 4 becomes the next digit in our result. 
Result so far: 8762.744
The remainder is 40 after subtracting 360 from 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

The final result is 8762.744 with a remainder of 0.004.